Water-Activated Linerless Adhesive Articles and Related Methods

摘要

Water-activatable, linerless adhesive articles and related methods are described. The adhesive articles utilize a dry, non-tacky protective layer for protecting the adhesive layer from contamination and therefore do not require a release liner. The protective layer includes at least one of amorphous polyvinyl alcohol and poly(ethylene oxide). The adhesive articles are bonded to a substrate by applying a polar solvent, such as water, to the protective layer, which mix to form a tacky material. The tacky material forms a weak, temporary bond with the substrate and allows the adhesive articles to be repositioned on the substrate. The tacky material gradually pools together at the substrate/adhesive article interface to expose the underlying adhesive layer. The exposed adhesive layer then forms a permanent bond with the substrate.

主权项

1. A water-activatable adhesive article comprising:
a facestock, an adhesive layer disposed on the facestock, and a water-soluble, film-forming protective layer covering at least a portion of the adhesive layer wherein the protective layer is in a dry form and is non-tacky, and wherein upon contacting a solvent to the protective layer, the covered portion of the adhesive layer is at least partially exposed.